Sub-picosecond chirped laser pulse-induced airflow and water condensation in a cloud chamber

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2018,（6）
• 页码范围: 59-63
• 页数: 5页
• 语种: 英文
• DOI: 10.3788/COL201816.061403

摘要

Sub-picosecond chirped laser pulse-induced airflow and water condensation were investigated in a cloud chamber.The results indicate that the positively chirped sub-picosecond laser pulses generate a more uniform intensity distribution inside the plasma column,leading to a weaker airflow and an elliptic-shaped snow pile.The negatively chirped sub-picosecond laser pulses generate a spark-like intensity distribution inside the plasma column,which produces a wider range of airflow and a round snow pile.The amount of snow weight and the concentration of NO3-are found to be dependent on the intensity distribution inside the plasma column.The visibly stronger plasma column generates much more snow and a higher concentration of NO3-.These experimental results provide a reference for sub-picosecond laser-induced water condensation in realistic atmospheric conditions.